Network Traffic in Javascript

Question

I want to know if is there a way to get the network traffic of a webpage or interface connection using javascript? Basically is to implement tcpdump or Wireshark with javascript.

Any idea?

Edit

I want to get all the images/css/etc that a webpage get when it loads and would like to get this information to build a google chrome extension.

Answer 1

May be the global navigator objects property would throw some light.

navigator.network is the property.